[Larry the Loafer]

It would be good to see the end of interlacing really, it's often a nightmare to work with in this modern digital world. UHD is entirely progressive, but it's likely to be a long time until that becomes standard (and there's always going to be the decades of legacy interlaced content to deal with even then). My current camcorder is 1080p50 and it's a hell of a lot easier to work with when editing than my old 1080i50 and 576i50 ones were.

As we've mentioned in other threads, moving over to progressive video is one thing, but bringing all the old interlaced stuff with us is something only some of us seem to care about, sadly.

UPDATE: For anyone still playing along at home, it seems to be a mix of compression artefacts and refresh rate. I upped the quality in Handbrake from RF20 to RF18 and it seems to have completely eradicated the judder on that spinning Nationwide clip. It's nearly doubled the file size though, so I'll see if I can play around with the settings some more and find a balance. But, overall, I think the mystery is finally solved. Thank you again for your insight, Neil. I would've never considered refresh rate if it wasn't for you!